mfd: db8500-prcmu: update resource passing

When trying to get rid of the cross-includes of <mach/id.h>
from different drivers, so we can localize ASIC/CPU detection
to the mach-ux500 folder, we run into the way the PRCMU
handles base addresses and firmware detection.

This patch updates the firmware version detection to pass
the required information as platform data instead of
relying on cpu_is_* macros.

Now the PRCMU base address, the secondary TCDM area, the
TCPM area and the IRQ are passed as resources instead of
being grabbed from <mach/*> files. Incidentally this also
removes part of the reliance on <mach/irqs.h>.

Further it updates the firmware version detection, since the
location of the firmware ID bytes in the designated memory
are is now passed from the platform data instead. There is
no reason not to include the nice split-off of a struct to
hold the firmware information and a separate function to
populate it.

The patch actually rids the need to use the external
db8500_prcmu_early_init call at all, but I'm keepin back
that removal as I don't want the patch to be too big.

Cc: arm@kernel.org
Cc: Michel Jaoen <michel.jaouen@stericsson.com>
Cc: Lee Jones <lee.jones@linaro.org>
Acked-by: Samuel Ortiz <sameo@linux.intel.com>
Acked-by: Loic Pallardy <loic.pallardy@stericsson.com>
Acked-by: Fabio Baltieri <fabio.baltieri@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

4 files changed, 55 insertions, 6 deletions

diff --git a/arch/arm/mach-ux500/board-mop500.c b/arch/arm/mach-ux500/board-mop500.c
index d453522edb0..6cb1407961e 100644
--- a/arch/arm/mach-ux500/board-mop500.c
+++ b/arch/arm/mach-ux500/board-mop500.c
@@ -215,7 +215,7 @@ static struct platform_device snowball_sbnet_dev = {
 	},
 };
 
-static struct ab8500_platform_data ab8500_platdata = {
+struct ab8500_platform_data ab8500_platdata = {
 	.irq_base	= MOP500_AB8500_IRQ_BASE,
 	.regulator_reg_init = ab8500_regulator_reg_init,
 	.num_regulator_reg_init	= ARRAY_SIZE(ab8500_regulator_reg_init),
@@ -651,6 +651,7 @@ static void __init mop500_init_machine(void)
 	int i2c0_devs;
 	int i;
 
+	platform_device_register(&db8500_prcmu_device);
 	mop500_gpio_keys[0].gpio = GPIO_PROX_SENSOR;
 
 	mop500_pinmaps_init();
@@ -685,6 +686,7 @@ static void __init snowball_init_machine(void)
 	struct device *parent = NULL;
 	int i;
 
+	platform_device_register(&db8500_prcmu_device);
 	snowball_pinmaps_init();
 	parent = u8500_init_devices(&ab8500_platdata);
 
@@ -710,6 +712,7 @@ static void __init hrefv60_init_machine(void)
 	int i2c0_devs;
 	int i;
 
+	platform_device_register(&db8500_prcmu_device);
 	/*
 	 * The HREFv60 board removed a GPIO expander and routed
 	 * all these GPIO pins to the internal GPIO controller
diff --git a/arch/arm/mach-ux500/cpu-db8500.c b/arch/arm/mach-ux500/cpu-db8500.c
index 09c3fee726d..8501970641b 100644
--- a/arch/arm/mach-ux500/cpu-db8500.c
+++ b/arch/arm/mach-ux500/cpu-db8500.c
@@ -139,14 +139,9 @@ static struct platform_device db8500_pmu_device = {
 	.dev.platform_data	= &db8500_pmu_platdata,
 };
 
-static struct platform_device db8500_prcmu_device = {
-	.name			= "db8500-prcmu",
-};
-
 static struct platform_device *platform_devs[] __initdata = {
 	&u8500_dma40_device,
 	&db8500_pmu_device,
-	&db8500_prcmu_device,
 };
 
 static resource_size_t __initdata db8500_gpio_base[] = {
@@ -286,6 +281,8 @@ static struct of_dev_auxdata u8500_auxdata_lookup[] __initdata = {
 	OF_DEV_AUXDATA("st,nomadik-i2c", 0x80128000, "nmk-i2c.2", NULL),
 	OF_DEV_AUXDATA("st,nomadik-i2c", 0x80110000, "nmk-i2c.3", NULL),
 	OF_DEV_AUXDATA("st,nomadik-i2c", 0x8012a000, "nmk-i2c.4", NULL),
+	OF_DEV_AUXDATA("stericsson,db8500-prcmu", 0x80157000, "db8500-prcmu",
+			&db8500_prcmu_pdata),
 	/* Requires device name bindings. */
 	OF_DEV_AUXDATA("stericsson,nmk_pinctrl", 0, "pinctrl-db8500", NULL),
 	/* Requires clock name and DMA bindings. */
diff --git a/arch/arm/mach-ux500/devices-db8500.c b/arch/arm/mach-ux500/devices-db8500.c
index 318d4902089..f3d9419f75d 100644
--- a/arch/arm/mach-ux500/devices-db8500.c
+++ b/arch/arm/mach-ux500/devices-db8500.c
@@ -13,11 +13,13 @@
 #include <linux/amba/bus.h>
 #include <linux/amba/pl022.h>
 #include <linux/platform_data/dma-ste-dma40.h>
+#include <linux/mfd/dbx500-prcmu.h>
 
 #include <mach/hardware.h>
 #include <mach/setup.h>
 #include <mach/irqs.h>
 
+#include "devices-db8500.h"
 #include "ste-dma40-db8500.h"
 
 static struct resource dma40_resources[] = {
@@ -194,3 +196,45 @@ struct platform_device u8500_ske_keypad_device = {
 	.num_resources = ARRAY_SIZE(keypad_resources),
 	.resource = keypad_resources,
 };
+
+struct prcmu_pdata db8500_prcmu_pdata = {
+	.ab_platdata	= &ab8500_platdata,
+	.version_offset	= DB8500_PRCMU_FW_VERSION_OFFSET,
+	.legacy_offset	= DB8500_PRCMU_LEGACY_OFFSET,
+};
+
+static struct resource db8500_prcmu_res[] = {
+	{
+		.name  = "prcmu",
+		.start = U8500_PRCMU_BASE,
+		.end   = U8500_PRCMU_BASE + SZ_8K - 1,
+		.flags = IORESOURCE_MEM,
+	},
+	{
+		.name  = "prcmu-tcdm",
+		.start = U8500_PRCMU_TCDM_BASE,
+		.end   = U8500_PRCMU_TCDM_BASE + SZ_4K - 1,
+		.flags = IORESOURCE_MEM,
+	},
+	{
+		.name  = "irq",
+		.start = IRQ_DB8500_PRCMU1,
+		.end   = IRQ_DB8500_PRCMU1,
+		.flags = IORESOURCE_IRQ,
+	},
+	{
+		.name  = "prcmu-tcpm",
+		.start = U8500_PRCMU_TCPM_BASE,
+		.end   = U8500_PRCMU_TCPM_BASE + SZ_4K - 1,
+		.flags = IORESOURCE_MEM,
+	},
+};
+
+struct platform_device db8500_prcmu_device = {
+	.name			= "db8500-prcmu",
+	.resource		= db8500_prcmu_res,
+	.num_resources		= ARRAY_SIZE(db8500_prcmu_res),
+	.dev = {
+		.platform_data = &db8500_prcmu_pdata,
+	},
+};
diff --git a/arch/arm/mach-ux500/devices-db8500.h b/arch/arm/mach-ux500/devices-db8500.h
index a5e05f6e256..dbcb35c48f0 100644
--- a/arch/arm/mach-ux500/devices-db8500.h
+++ b/arch/arm/mach-ux500/devices-db8500.h
@@ -14,6 +14,11 @@
 
 struct ske_keypad_platform_data;
 struct pl022_ssp_controller;
+struct platform_device;
+
+extern struct ab8500_platform_data ab8500_platdata;
+extern struct prcmu_pdata db8500_prcmu_pdata;
+extern struct platform_device db8500_prcmu_device;
 
 static inline struct platform_device *
 db8500_add_ske_keypad(struct device *parent,